Kneading machine



@Wm wm, www? IF. MEMPTIER KNEADING MACHINE Filed May 2l, 1926 M I W L- *":r: w

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application tledti'ay ai, that, Serial tifo. Hiwit,- andl. in Germany rune at, that.

My invention relates'ito lrneading machines and more particularly to machines treating resiliently plastic materials, for instance rubber. lt is an object ot my inveno tion to'provide a machine in which the tendency ot" the material is overcome to accumulate at the point wl'iere the kneading arms move toward A,the inner end ot the charging ho per. io llo this end l provideV a downwardly extending partition in connection with the in ner .end oi the charging hbpper, said partition extending to a point between the highest point of the path ot said kneading arms it and their axis of rotation, preferably where the tangent to the 'circle described by the lrneading arms extendsat a comparatively steep angle to the horizontal and therefore the kneading arms'hav'e no tendency to torce at the material back toward the charging hopper, but on the contrary tend-.to pull '1t out ot the hopper in downward direction.

lin the preferred embodiment ot my invention l provide two superimposed kneadat ers and ll so arrange their axes that the line which connects their axes is substantially parallel to the tangent at the endot the partition.

ln the lrneading machines tor resiliently no plastic materials as heretofore desi r. the arrangement ot parts is substantially the Same as in kneadinc machines for working dough and other plastic, vbut not resilient substances. Where such machines are apan plied to the treatment oi resiliently plastic substances, it has been found that the suh-l stances 4tend to rise toward the charging lioper ot the machine where they are beyon reach ot the kneadingiaction so thatV to the output ot the machine is much reduced.

ll have lound that in providing a partition as described the output ot the machine is greatly increased.

ln the drawings adixed to .this specificaat tion and' forming part thereot' a lrneadingf machine embodying my invention is illus'- trated diagrammatically by way ot example in vertical section.

4 Reterring to the drawings, a and b are to hneaders supported in the trough f. The

lmeaders are mounmd on superposed chatte and 7ll androtate in opposite directions, as indicated by the arrows. c is the iront wall of the trough which ispivoted to its charging hopper al at k and can be swung upwards as shown in dotted lines.

A partition e extends downwardly trom the inner end ot the hopper d to a point intermediate the highest point olf the path of the lmeading arms and the axis ot the shatt g, said portion extending atl the end ot the hollow cylinder c in which the laneader4 a rotates. ln the example illustrated theradius trom the shalt g to the end of the partition e extends at an angle oil about 30 to the horizontal, and theretore the tangent at this point extends at an angle ot about 60 to the horizontal.

'lhe rotating arms ot the upper hneader c tend to ull the material away from the discharge opper and to torce it downwardly toward the lower lineader t, which is arranged below the hrst eader, and preterably spaced troml it in such manner that the -line connecting the axes ot the two shatts extends in parallel to the tangent at the end ot the partition c. -lln consequence ot this arrangement the upwardly moving arms oil the kneader b are unable to pushfthe material bach toward the hopper d'i'but 'torce it into the path ot the downwardly movin arms ot the lrneader a.

wish it to be understood that ll do not desire to be limited to the exact details ot construction shown and described, lor obvious moditications will occur to a person skilled in the arti l claim ltneading machine comprising a trough, a kneader mounted tor rotation in said trough, a charging hopper adapted tosupply inaterial to said lineader, a partition extending from the inner endot said hopper to a point intermediate between the highest point attained b said lnneader and its axis ot rotation, an 'a second lmeader so arranged below said kneader that the line connmting the axes ot both la exten substantially in parallel to the tangent at the end ot said partition..

'ln testimony whereot l axjr `nature titl titi 

